This week we tested our device to find out it unfortunately failed, due to the spring not pushing down the plunger axially. We are updated the design and continuing with testing to get it to work.
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Over the past few weeks we have been going to Professor Widder's Lab to CAD draw the pieces for our injector and 3D print them. This week, we have finally come up with a CAD drawing for each piece that fits and works together as intended, and have 3D printed them out to begin testing.
This week we updated and printed new parts for our design. We also did preliminary testing to see if the design worked or not. We found that we may have to make some further adjustments to our button part.
This week we updated our website to have our most recent weekly reports. We have also made alterations to our mechanism design and 3D printed the new pieces. We're very satisfied with the new pieces, as they are much sturdier and adequately fit the spring and syringe inside.
This week Ben gave his Verification and Validation Presentation. We had to reschedule our client meeting due to spring break, we are now meeting with them on the 24th. We're also discussing our validation testing with our friends with allergies so that they can test the finished device.
This week we finished our Verification and Validation plan culminating in our V&V report. We also 3D printed our preliminary CAD designs and attempted to use those for proof of concept testing. Unfortunately, some of the measurements were slightly off, but we were able to do proof of concept testing using shortened needles and ballistic gelatin.
This week we met with our clients and went through more risk analysis with them, updating our designsafe worksheet. We have created our preliminary CAD drawings for the injection mechanism, which we will print next week and use for our proof of concept. We additionally have working on our plans for verification and validation.
This week we finalized a design that we wanted to use, and made a specific parts list with all of the parts we want, and the material we want to make it made out of. We also visited techshop to tour the facility and see what tools we should be using there. Lastly, we are meeting with our clients this week to discuss our progress and designsafe.
This week we started drafting our plan for proof of concept and V&V testing. Our plan includes using ballistic gel to test that our device works as designed. We also have been exploring similar spring mechanisms to understand the details our design should include so that it functions properly.
In the Wednesday section of class we were given advice to reverse engineer a nerf gun, which has a similar spring loading mechanism to one that we are interested in using. So, we will purchase that and use that as a basis to figure out how we want our mechanism to work.
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April 2017
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